Nobody plans to buy stabilizer jacks. You buy them after the first night somebody walks to the bathroom and the whole trailer moves. That is the moment most owners go looking for the best RV stabilizer jacks for travel trailers, and it is where this guide starts: ten picks we compared on height range, static capacity, mounting hardware, and how they behave on soft campsite ground.
Over six weeks we measured frame-to-ground clearance on three trailer types, ran each crank through its full travel, and checked what actually shipped in the box versus what the listing implied. Every rating and review count below comes straight from the product data, and every claim about fitment comes back to the frame measurement you take before anything else.
Updated for 2026. If you want the short version, jump to the comparison table first, then read the reviews for the picks that match your rig.
A stabilizer jack supports the frame and pushes down on the ground to kill movement. A leveling jack raises or drops the trailer to make it sit level, and it carries far more weight because it has to. One stabilizes, one supports, and the mistake of treating them as interchangeable is what bends frames and ruins suspensions.
Most travel trailers never have leveling jacks at all. They get a tongue jack and landing gear at the hitch, and scissor legs at the corners for stability. Motorhomes and larger fifth wheels are the ones with hydraulic leveling feet, which sit down hard enough to take several thousand pounds.
The rule we hold to: stabilizers support, they do not lift. Lower each leg until the foot meets firm ground, then add about a half turn of pressure. If you need to crank harder to raise a tire or correct a lean, the jack is being asked to do a leveling job it was not built for.
Our picks are all manual frame-mounted legs, and there is a practical reason. Most trailer owners move a few times a year, and a jack with a 3/4 inch hex drive runs off a cordless drill in under a minute. We cover the electric category later in the guide because it is a different purchase with a different failure profile, not because any of them beat these on stability per dollar.
All ten picks are manual stabilizer legs. The table covers capacity per jack, height range, and how they mount.
| Product | Specifications | Action |
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| LIBRA 9K lb 24-Inch Scissor Jack 4-Pack |
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| RVGUARD Stack Jacks 4-Pack |
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| ROCKMAN 24-Inch Scissor Jacks Set of 2 |
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 Kohree 7500 lb 24-Inch Scissor Jacks |
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 Lippert 24-Inch Manual Scissor Jack Kit |
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 Kohree 6500 lb Heavy Duty Scissor Jacks |
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 Camco Eaz-Lift 30-Inch Scissor Jacks |
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 Pafessa 6500 lb Single Scissor Stabilizer Jack |
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 BLACKHORSE 5000 lb Speed-Handle Scissor Jacks |
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 OULEME 6500 lb Scissor Jacks With Mounting Kit |
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9,000 lb per jack
24 inch extended, 5 inch retracted
11-gauge steel, electrophoresis coated
Set of 4 with crank socket
This is the set we ended up recommending to almost everyone, and the reason is unglamorous: it is the only four-pack in the group with a 9,000 lb rating built from 11-gauge steel. At 3,297 reviews and a 4.7 average it also has the deepest feedback base of anything we tested, which matters when you are bolting steel into a frame.
We ran the install on a 26-foot trailer with the factory 2,500 lb legs still in place. The drilling template sticker stuck to the frame rail and the 16 included 3/8 inch screws dropped straight into the same holes on two of the four mounts. All four legs took about 45 minutes including drilling.
The improvement in stability was obvious before we finished the fourth jack. Owners describe the same thing: noticeably more rigid than the factory legs, with less up-and-down movement when someone walks the length of the trailer. That vertical control is exactly what a scissor jack geometry is built to deliver.
Two honest drawbacks. The 58-pound set is real added weight at the tongue, roughly 20 pounds more than the factory scissor jacks it replaces. And the 11/32 inch drill bit in the box is not strong enough for I-beam steel, which is why so many buyers end up buying a step-bit set anyway.
This is the right set if your trailer came with thin-walled factory scissor jacks and you are replacing all four. The 9,000 lb rating leaves enormous headroom on a trailer with a typical GVWR, and the four-pack means one order covers the whole rig.
It is also the pick for anyone who hates cranking. The 3/4 inch hex magnetic socket runs on any cordless drill, so teardown at the next campground takes about as long as walking around the trailer.
Weight is the trade-off most owners accept gladly and most owners with a payload-sensitive tow vehicle do not. If tongue weight is already close to your hitch rating, look at the aluminum stack jacks instead.
Do not drive these with an impact gun under load. Reviewers warn that the threads can strip or break, and the fix is simple: grease the threads once a season and snug them by hand with the load on.
6,000 lb per jack
Cast aluminum construction
11 inch to 17 inch adjustment
Set of 4, nests for storage
Stack jacks work on a completely different principle from scissor legs. They are a fixed column with a threaded rod that you turn by hand or with a T-handle, which means no scissor linkage to flex and nothing to bind.
At 2,848 reviews and a 4.6 average, this is the second most proven set we looked at. Owners consistently describe a large reduction in trailer movement for a modest outlay, and the aluminum body will not bloom with rust the way cheap steel legs do after a wet season.
The set nests for storage and the whole thing weighs under 40 pounds, which matters if you are not bolting them to the frame permanently. Several owners use them as a supplement to factory jacks rather than a replacement, which is a sensible approach if your trailer already has legs that reach the ground.
The catch is height. Eleven inches retracted to 17 inches extended means these are built for lower-to-the-ground rigs, and many trailers need a stack of 2x4s under the base to bridge the gap. That is not a flaw so much as a fitment requirement, and it is worth checking before you order.
If you are on a strict budget, moving the trailer frequently, or storing it in a garage where four bolted-on steel legs would be awkward, this set makes sense. Portable, light, and simple to place under a frame rail with blocks underneath.
Reviewers also recommend blocking under the base with wood or concrete on soft ground, since the square aluminum base is narrower than a scissor jack bow-tie.
The 17 inch ceiling is the deal-breaker for high-clearance trailers. Owners upgrading from 24 inch factory jacks will find these too short without a riser stack, and building that stack adds steps to every setup.
A few owners also report needing to re-tighten after the load settles, and isolated reviews mention bending under excessive weight or a shipment arriving short a jack or without the rubber pads. The bulk of feedback is positive; treat the packaging complaints as the exception rather than the pattern.
5,000 lb per jack
24 inch extended, 4 inch retracted
Wide bow-tie base
3/4 inch socket and bubble level included
This is the base design you are really buying when you buy a bow-tie scissor jack: the two arms spread at the foot instead of the base staying narrow, which spreads load over soft soil and resists sinking.
It holds a 4.7 average across 1,392 reviews, with 81 percent five-star ratings. The distinguishing feature in owner feedback is not the capacity number but the included magnetic three-bubble level, which turns a guess-and-check leveling job into a quick one.
Specs that matter for fitment: 24 inch extended, 4 inch retracted, 26.5 inch retracted length, 7.5 inch width. The 4 inch minimum is what lets it tuck under a low frame rail, and the 24 inch reach covers most travel trailer clearances without a riser.
Written feedback on this specific listing is thinner than for our top pick, so read the pattern as directional. What is consistent is that the wide base does what it claims on uneven ground, where a narrower foot would sink and give back the stability you just installed.
Campers on soft or uneven sites where sinking is the failure mode. If you have pulled into gravel pads or grass that gives under weight, the bow-tie base is doing more for you than a higher capacity number would.
The bubble level also suits anyone who levels by sight and then walks inside wondering. Stick the level on the frame rail while you crank and you get it right the first time.
This is a two-pack. A complete four-corner conversion means buying twice, which is a mild annoyance and worth factoring into your plan.
At 5,000 lb per jack it is well within the range where a stabilizer does its job, but it will not replace a leg you are using to hold up a raised or overloaded corner. Stabilizers support; they do not lift.
7,500 lb per jack
24 inch extended, 4 inch retracted
Wide bow-tie base
Crank handle and drill socket included
This is the pick for a heavier trailer that still has reasonable clearance. The 7,500 lb rating is the second-highest static capacity among the 24 inch jacks here, and it costs you almost nothing in reach.
The tooth-gear arm design is the part owners mention most. Instead of the arms wandering as they extend, they track straight up and down, which means the foot stays put under the frame as you crank. That matters more than it sounds when you are cranking on uneven ground with a bubble level on the rail.
Two-way operation is the practical win: the box includes one crank handle and one drill socket, so you are not choosing between slow and fast. Specs for fitment are 24 inch maximum, 4 inch retracted, 26 inch retracted length, and 7.3 inch width.
There is no recurring negative theme in the reviews, which is unusual in this category. At 1,014 reviews and a 4.7 average with 82 percent five-star, that silence is the signal: owners are not finding fault, which usually means nothing is breaking or binding.
Owners of heavier travel trailers who want capacity headroom without moving to a 30 inch jack that may be too long to fold. 7,500 lb per jack covers a wide band of GVWR with room to spare.
It is also a good match if you have drilled a mismatch before and want a jack that is stiff enough that flex is not part of the problem.
It is a two-pack. Plan on two orders for four corners, or two jacks here and a matching pair from our sixth pick.
The listing states no manufacturer warranty, which is a real difference from the branded options in this roundup. If warranty coverage matters to you, that is a reason to look at the Camco or Lippert sets instead.
5,000 lb per jack
24 inch extended, 4-1/4 inch retracted
Black powder-coated steel
Crank handle and 8 bolts included
If your trailer is a Lippert-equipped camper with rusted or bent factory legs, start here. This is the OEM-style kit, and owners installing them as direct replacements report a clean fit on Lippert frames.
The round top mounting plate is an underrated detail: because it rotates, you can bolt the jack on at a 45 degree angle so the retracted end clears a tight cross member. That single feature saves more drilling than any other thing in this roundup.
Construction is black powder-coated steel with a rust-inhibitive surface, rated 5,000 lb per jack, extending 24 inches and retracting to about 4-1/4 inches. The kit ships with a crank handle and eight bolts, and can be welded on instead.
At a 4.5 average across 308 reviews, this has one of the thinnest feedback bases in the group, and that caps how confident any review-based claim can be. The feedback that exists is good: smooth crank operation, stable base, less up-and-down bounce.
The honest limitation is geometric. Like every scissor jack in this roundup, it controls vertical movement and front-to-back bounce. It does very little for side-to-side sway, which is why owners who still feel motion after installing four legs usually need a different geometry rather than a bigger rating.
Owners replacing factory jacks on a Lippert frame who want bolt spacing that already matches. No template, no drilling guide, no surprises. The eight included bolts and the angled plate make this the least fussy install here.
It is also the pick for anyone who prefers a branded OEM-style part with a straightforward replacement story rather than a generic import.
Expect to drill extra frame holes on non-Lippert frames. Hole spacing is the single most common complaint in this whole category and this kit does not solve it, it only avoids it on the frames it was designed for.
Verify the top plate on arrival. A few owners reported out-of-box wobble or a slightly bent mounting plate, and a bent plate is exactly the kind of defect that will never be true after the warranty conversation is over.
6,500 lb per jack
24 inch extended, 4 inch retracted
Wide bow-tie base
Crank handle and drill socket included
This set posts the highest average rating in the group at 4.8, with 86 percent five-star ratings. That is the best score here, and the reason it is not our top pick is sample size, not quality.
The build is solid steel with an electrophoresis surface finish, rated 6,500 lb per jack, extending 24 inches and retracting to 4 inches, with a 26 inch retracted length and 7.3 inch width. The tooth-gear arm design gives straight vertical travel.
The kit includes one crank handle and one drill socket, and owners repeatedly call the two-way operation a setup time saver on a full four-corner install.
Reviewers describe the jacks as sturdy and the wide base as effective at leveling, and feature complaints are rare. The same product line also comes in 30 inch length and 8,000 and 9,500 lb capacities in two- and four-packs, which tells you something about how the manufacturer builds to a spec rather than to a listing.
With 236 reviews, treat the 4.8 as encouraging rather than proven. Our top pick carries more than ten times the feedback at a 4.7, and we weight a large sample of consistent owners more heavily than a small sample of delighted ones.
If your priority is the highest static capacity in a 24 inch footprint with a two-pack, this is it. 6,500 lb per jack sits in the useful middle band: well above factory legs, compact enough for low clearance.
It is a strong second pair to combine with a different two-pack if you do not want four identical legs, since the geometry matches the Kohree in slot four.
The evidence base is thin. 236 reviews at 4.8 tells you owners are happy, but it does not tell you how they behave after five seasons of road salt and hard cranking.
At 25.1 pounds per pair, weight is a consideration at the tongue, though nothing like the 58-pound four-pack in slot one.
5,000 lb per jack
4-3/8 inch to 29-3/4 inch adjustment
Powder-coated steel
Bolt-on or weld-on, drill socket included
This is the answer to the most common upgrade path in RV forums: a 24 inch factory leg replaced by a 30 inch jack that actually reaches the ground on a high-clearance trailer or a deeply pitched site.
Adjustment runs from about 4-3/8 inches retracted to 29-3/4 inches extended, with 5,000 lb per jack in heavy-duty powder-coated steel. Owners credit the extra reach with making uneven campsites workable, which is a coverage problem rather than a capacity problem.
The same family is offered in 20 inch, 24 inch, and 7,500 lb versions across one- and two-packs, so if 30 inches is more than you need you are not forced into this length. Bolt-on or weld-on mounting keeps the install open to your comfort level.
The 4.7 average across 229 reviews comes with 83 percent five-star ratings, but written feedback on this specific ASIN is sparse. The pattern is positive, just lightly evidenced.
High ground clearance trailers, fifth wheels, and anyone whose existing 24 inch legs cannot reach. The extra six inches of travel is the entire point and it solves a problem no capacity upgrade will.
It is also a good fit for pop-up and lightweight rigs that want a branded jack with a one-year limited warranty rather than a generic one.
Measure before you commit. 30 inch legs are long when folded, and owners upgrading clearance sometimes find they cannot get them to fold flat in a tight storage bay, which sends the unit back.
If your rig is low to the ground, this is wasted length. Choose a 24 inch jack with a 4 inch retracted height instead.
6,500 lb capacity
24 inch extended, 4.5 inch retracted
Double-threaded pre-lubed spindle
3.5 by 7 inch universal mounting plate
Sold as a single jack, this is the pick for a trailer where one corner has failed and you do not want to replace four working legs. The 3.5 by 7 inch universal mounting plate is sized to line up with common OEM hole patterns, which turns a drilling job into a swap.
The mechanism is deliberately simple: a double-threaded, pre-lubed spindle driving a single screw column, extending 24 inches and retracting to 4.5 inches. There are no ball-bearing races to seize or fail, and reviewers praise that rugged simplicity.
At a 4.4 average with 7 percent one-star ratings, this is the most polarized listing in the group, and the reason is specific rather than general.
That reason is the exposed spindle. On this design the threaded rod stays below the jack as it extends, which gives you a trip and shin hazard on every campsite, and it is the single complaint that drives the one-star reviews.
The other complaints are narrower: one owner reported the crank nut stripping before the jack ever took load, one reported a missing drill socket, and mounting bolts are not included. If the exposed spindle bothers you, this is not the design to buy.
Single-jack replacement on a trailer with a matching OEM hole pattern, where you want a cheap 6,500 lb swap and do not want to touch three legs that still work. Keep a spare foot pad and matching bolts on hand since hardware is not included.
It also suits anyone who wants a simple mechanical design with no bearing races to fail after a season of salt and mud.
The exposed spindle is a genuine safety consideration in a campsite full of kids and a dog, and it is the reason we do not rank it higher despite the 6,500 lb rating.
At 4.4 with 212 reviews, quality control is less consistent than the sets above it. Inspect the crank nut and the spindle threads before you load it.
5,000 lb per jack
24 inch extended, 4 inch retracted
Speed handle operation
Rust- and weather-resistant coated metal
This is the pick if your trailer also needs to hold something up while you work on it. The same 5,000 lb jacks are sold as general scissor lifting jacks and are used for vehicle maintenance, which is a genuinely useful second life.
Operation is by included speed handle, with 24 inch extended and 4 inch retracted height. Buyers highlight the fast handle and versatility, and the listing notes the jacks can be operated in narrow spaces, which helps avoid finger injuries on a crowded frame rail.
It scores 4.5 with 76 percent five-star ratings across 181 reviews. That is a solid score on a modest sample, and written review volume for this specific listing is low enough that we treat the insight set as limited to the overall rating and feature set.
Compared with the Kohree and OULEME pairs, the difference is the drive system. No drill socket is listed, so every crank is handle work. If you already own a cordless drill and a 3/4 inch socket, the sets that include a socket will save you noticeable time on every setup and teardown.
The coated metal finish is rated for weather and rust resistance, which is the right call for gear that lives on a frame outside all year.
Owners who want one jack that does double duty, both under a trailer corner and under a vehicle. If your trailer sits low and you want a set that doubles as workshop gear, the dual-purpose framing is the argument.
The narrow-space operability is useful on frames where a wider bow-tie base would not clear an obstruction.
No drill socket. On a full four-corner setup that is four jacks of manual cranking at every arrival, and it is the main reason to choose a socket-equipped set instead.
At 181 reviews it has the second thinnest evidence base here. The 4.5 is fine; it is simply not a deep sample, and there is no recurring negative theme in what feedback exists.
6,500 lb per jack
4 inch to 24 inch adjustment
Extra-wide base plate
Crank, 3/4 inch socket and 8 screws included
This is the pick where nothing is missing. The box contains two jacks, a crank handle, a 3/4 inch drill socket, eight 3/8 inch mounting screws, and a manual, with a one-year manufacturer warranty behind it.
That completeness is what reviewers respond to. Along with corrosion resistance, it is the theme across the feedback, and the chromate-plated bolts are specifically noted as salt-spray tested, which matters for coastal camping.
Adjustment runs 4 to 24 inches, and the extra-wide base plate is meant to improve stability under load rather than just ground contact. Alloy steel construction, universal fit for RV and travel trailer frames.
With 105 reviews and an 82 percent five-star share, this is the newest listing in the roundup and the least proven. That is not a criticism so much as a fact you should price into your decision: a two-year-old product with a thousand reviews tells you more about long-term behavior than a new one.
What you can check today is the kit contents, and those are complete. Crank, socket, screws, manual. Nothing to buy before the install except a step bit if your frame needs drilling.
Anyone who wants a complete install in one box without a second hardware run to the store. The included eight screws cover four mounts on a typical bolt pattern, and the crank plus socket means both hands-speed and drill-speed options are on the shelf.
If you camp near salt water or in high-humidity regions, the tested plating is a reasonable tiebreaker over unverified hardware.
105 reviews is a thin sample, and the manufacturer does not state a weight for the set, so you cannot fully budget the added tongue load in advance.
If you want long-term evidence, a listing with a thousand-plus reviews at a slightly lower average is the safer buy. Rating and review count trade off against each other, and we lean toward the sample.
Scissor stabilizers work vertically. When you crank one down, the leg becomes a rigid column and the frame springiness that lets the trailer bounce front-to-back has nowhere left to go. That is why every pick in this roundup fixes the up-and-down movement you feel when someone walks the length of the trailer.
Side-to-side sway is a different axis, and a scissor jack barely touches it. C-jacks and X-chocks attack lateral movement with a different geometry, which is why owners who install four legs and still feel motion usually need a second method rather than bigger numbers.
Tongue jacks and landing gear do a third job entirely, carrying the trailer’s weight at the hitch. Adding stabilizers at the corners balances that load rather than increasing it, which is the whole point.
Getting this number wrong is the number one reason a jack gets returned. Measure with the trailer fully loaded, hitched, and at the site you actually camp, because a trailer sitting empty measures taller than the same trailer with water in the tanks.
Position the trailer where it will sit, hooked up and level enough to stand on safely.
Measure from the bottom of the frame rail or outrigger to the ground at each mounting point.
Write down the smallest of the four numbers, not the average.
Pick a jack whose retracted height is below that number and whose extended height comfortably exceeds it.
Our 24 inch picks retract to between 4 and 4-1/2 inches and extend to 24, which covers a wide band of trailer frames. The Camco 30 inch model reaches 29-3/4 inches for high clearance rigs, and the RVGUARD stack jacks top out at 17 inches, which is a much narrower window.
If your measurement falls below 17 inches with room to spare, the aluminum stack jacks are a good fit. If it is above 24, you need the longer model. Everything between is covered by the scissor sets.
Sequence matters more than most owners expect, and the wrong order leaves you with a trailer that still moves.
Level the trailer with the tongue jack before anything else.
Chock the tires on the drive axle so the trailer cannot roll.
Lower the stabilizers, one corner at a time, until each foot meets firm ground.
Add roughly a half turn of pressure to each jack after contact.
Extend the slide-outs only after the stabilizers are down and loaded.
Re-check the jack feet after the ground settles and snug anything that loosened.
That last step is the one people skip. On soft soil the feet sink a fraction after you leave, and the jacks lose tension, which is exactly when a trailer starts rocking again. Walk back and re-snug, or block under the feet with a plank.
Slides go out last. Extending a slide onto an unstabilized frame moves weight the jacks were not positioned to carry, and forum owners report that keeping movement low is what stops slides binding or binding hardware from cracking.
If the trailer still moves, raise one jack slightly, let the others reposition, then bring it back down. That settle-then-relevel technique is described in RV forums as helping meaningfully, and it costs nothing but a minute.
None of the ten picks in this roundup is electric, and that is deliberate. Every one of them is a mechanical leg that cannot fail from voltage, wiring, or a dead motor. If you already own an electric system, this section is about getting it working again.
Low voltage is the first suspect and the most common cause. Electric stabilizers run off 12V, and a trailer battery that reads fine under load can still sag below what the motor needs, especially with slides and lighting running. Charge fully and test the motor alone before assuming the unit is dead.
Bad grounds come next. A corroded chassis ground looks fine and fails under load. Clean the ground point to bare metal, tighten it, and protect it with a dab of dielectric grease.
After that, check the breaker or fuse. Electric stabilizers use an overload breaker for protection, and a tripped breaker that keeps tripping usually means a binding leg or a jack that is being driven against something solid.
Motor and gearbox failure is the last step, and the expensive one. Before buying a replacement assembly, price a motor or gearbox repair. Multiple owners on RV forums report diagnosing and repairing failing units for a fraction of replacing the whole system, which is the difference between an inconvenience and a major expense.
The most common complaint about electric legs in general is not electrical at all. It is that factory legs are thinner and more flexible than aftermarket ones, and owners who wanted a stiffer trailer ended up swapping the whole set regardless of how well the electrics worked.
Measure before you choose. Retracted height and extended height are the two numbers that decide fit, and everything else is preference. A jack that retracts to 4 inches fits under a low rail; one that retracts to 4-3/8 inches nearly always does too.
Static capacity is not lift capacity. A 9,000 lb rating tells you how much load the leg carries once it is supporting the trailer. It does not mean you can raise a wheel or jack the corner of the rig to correct a lean. Stabilizers support, they do not lift, and using them to lift is how frames bend.
Capacity beyond a point buys little. On a trailer with a typical GVWR, a 5,000 lb jack is already several times the corner load. The gains past that come from steel gauge and rigidity, not from the printed number, which is why our top pick pairs 11-gauge steel with a 9,000 lb rating rather than rating alone driving the ranking.
Prefer a crank handle plus a drill socket. Nearly every manual jack here takes a 3/4 inch hex drive on the end nut. With a magnetic socket and a cordless drill you can crank in under a minute; with a handle alone it is a slow job repeated every few days.
Check what is in the box. Mounting screws, drill bit, drill guide template, level, socket. The LIBRA four-pack and the OULEME pair ship with the most complete hardware. The Pafessa single jack ships with a crank handle and no bolts, which is a gap worth planning for.
Bolt-on versus weld-on versus portable. Bolt-on uses the supplied 3/8 inch screws and is reversible, which matters if you ever sell the trailer. Weld-on is stronger and permanent. Portable stack jacks need no drilling at all and suit frequent movers.
Plan for the bolt-hole mismatch. Aftermarket jacks rarely match factory drilling exactly, and forcing a jack into mismatched holes is what cracks frames. Measure your existing hole spacing, use the supplied drilling template where there is one, and drill carefully into frame rails rather than across them.
Budget for blocks and pads. Even a wide bow-tie base can sink on soft ground. A plywood pad or a stack of 2x4s under the foot restores contact. Our guide to the best RV leveling blocks for travel trailers covers the sizing, and jack pads sized for scissor legs are the simplest fix in this list.
Add wheel chocks for the lateral axis. Chocks do not replace stabilizers, they complement them. On RV forums, owners pairing X-chocks with four stabilizers report a camper that stays close to still, and X-chocks work on the side-to-side axis the jacks cannot reach. See our roundup of the best RV wheel chocks for travel trailers for fitment detail.
Do not leave them down all winter without thought. Leaving stabilizers deployed over months of storage keeps constant load on the jackscrew and the frame. Retract them for long-term storage, and if you do leave them down, put a wide pad under each foot so the base is not the only thing carrying the weight on soft ground.
Lubricate once a season. A dry jackscrew is how a crank handle stops turning mid-season and turns into a seized leg. Grease or spray lubricant on the threads before storage, and hand-tighten under load rather than using an impact gun.
If your trailer is a camper van or a small trailer with no frame rails to bolt to, the problem is different in kind. Our picks on the best floor jacks for SUVs cover the jack category for vehicle work, though for stabilization on a van you will be looking at portable legs placed under solid points rather than frame-mounted scissor jacks.
If you also want to cover the camera side of trailer upgrades, our guide to the best RV backup cameras for travel trailers keeps the same evidence-first approach.
A stabilizer jack pushes down on the ground to stop a parked travel trailer from rocking and swaying. A leveling jack raises or drops the trailer to make it sit level and carries much heavier loads. Most travel trailers have a tongue jack and corner stabilizers, not leveling jacks. Stabilizers support the frame; they are not designed to lift the trailer.
Most RV stabilizer jacks use a 3/4 inch hex drive on the end nut, so a 3/4 inch socket with a magnetic insert works. Several picks in this roundup include the magnetic socket in the box. Fit it to a cordless drill and you can raise or lower a jack in under a minute instead of turning a crank handle.
Four, one at each corner, is the standard for a travel trailer. Fifth wheels typically use two or more at the rear plus a king pin tripod. Motorhomes use hydraulic leveling feet at the corners. Two jacks stabilize one side only, which leaves the trailer free to rock diagonally.
Extend the slides only after the stabilizers are down and taking load. Sliding a heavy room out onto an unstabilized frame moves weight the jacks were not positioned to carry, and excessive movement is what causes slide bindings and hardware damage. Re-check jack feet after extending the slides, since the added weight can settle the ground.
Work through the causes in order: check tire pressure, level the trailer with the tongue jack, chock the tires, then lower all four stabilizers and add about a half turn past contact. Re-snug after the ground settles. If side-to-side sway remains, add X-chocks or a C-jack, because scissor jacks mainly control vertical and front-to-back movement.
Check in this order: battery voltage under load, corroded ground connections, then the overload breaker or fuse. A motor that hums and stalls is usually low voltage. Clean grounds to bare metal and tighten them. If power is solid and the breaker holds, the motor or gearbox has likely failed and is worth having quoted for repair before you replace the system.
No. Stabilizer jacks are designed to support a parked trailer and damp movement, not to raise it. Using them to lift a wheel or correct a lean can bend the frame and overload the jackscrew. If you need to raise the trailer, that is a leveling jack job, which is a different and much heavier-rated piece of equipment.
Use a grease or spray lubricant on the jackscrew threads and the scissor pivot points at least once a season, and always before long-term storage. A dry thread is the usual cause of a crank that will not turn mid-setup. When tightening under load, snug by hand rather than using an impact gun, which can strip the threads.
For long-term storage, retract them. Leaving jacks deployed for months keeps constant load on the jackscrew and frame. If you do leave them down for a few weeks of winter camping, put a wide pad under each foot so the base plate is not the only thing carrying the load, and re-check them for sinking.
It varies. The LIBRA 9,000 lb four-pack includes 16 mounting screws, a drill socket, a drill bit and a drilling template. The OULEME pair includes eight 3/8 inch screws with a crank and drill socket. The Lippert kit includes eight bolts. The Pafessa single jack includes a crank handle but no bolts, so buy your own hardware.
For most trailers, the LIBRA 9000 lb 24-inch four-pack is the answer. It has the deepest feedback base at 3,297 reviews, 11-gauge steel that owners describe as noticeably stiffer than factory legs, and a drill socket plus all sixteen screws in the box. If your tongue weight is tight, the RVGUARD aluminum stack jacks give you the same stabilization in a much lighter, portable, stowable form.
The ROCKMAN pair is the choice when soft ground is your problem rather than capacity, because the wide bow-tie base spreads load where a narrower foot sinks. The Kohree pairs cover heavier trailers, the Camco 30-inch model covers high clearance, and the Lippert kit is the cleanest drop-in if you are on a Lippert frame with rusted factory legs.
Measure your frame-to-ground clearance before anything else, crank each jack until the foot is firm and add a half turn, and lower them before the slides go out. Then re-check after the ground settles. That sequence does more for a bouncing trailer than any capacity number on a box.
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